package com.sxhalo.manage.dao;

import java.util.List;

import org.hibernate.LockOptions;
import org.hibernate.Query;
import org.hibernate.Session;
import org.hibernate.SessionFactory;
import org.hibernate.criterion.Example;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import org.springframework.context.ApplicationContext;
import org.springframework.transaction.annotation.Transactional;

import com.sxhalo.manage.map.TaskContacts;
import com.sxhalo.manage.map.TaskContactsId;
import com.sxhalo.manage.utils.Pager;

/**
 * A data access object (DAO) providing persistence and search support for
 * TaskContacts entities. Transaction control of the save(), update() and
 * delete() operations can directly support Spring container-managed
 * transactions or they can be augmented to handle user-managed Spring
 * transactions. Each of these methods provides additional information for how
 * to configure it for the desired type of transaction control.
 * 
 * @see com.sxhalo.manage.dao.TaskContacts
 * @author MyEclipse Persistence Tools
 */
@Transactional
public class TaskContactsDAO {
	private static final Logger log = LoggerFactory
			.getLogger(TaskContactsDAO.class);
	// property constants

	private SessionFactory sessionFactory;

	public void setSessionFactory(SessionFactory sessionFactory) {
		this.sessionFactory = sessionFactory;
	}

	private Session getCurrentSession() {
		return sessionFactory.getCurrentSession();
	}

	protected void initDao() {
		// do nothing
	}

	public void save(TaskContacts transientInstance) {
		log.debug("saving TaskContacts instance");
		try {
			getCurrentSession().save(transientInstance);
			log.debug("save successful");
		} catch (RuntimeException re) {
			log.error("save failed", re);
			throw re;
		}
	}

	public void delete(TaskContacts persistentInstance) {
		log.debug("deleting TaskContacts instance");
		try {
			getCurrentSession().delete(persistentInstance);
			log.debug("delete successful");
		} catch (RuntimeException re) {
			log.error("delete failed", re);
			throw re;
		}
	}

	public TaskContacts findById(TaskContactsId id) {
		log.debug("getting TaskContacts instance with id: " + id);
		try {
			TaskContacts instance = (TaskContacts) getCurrentSession().get(
					"com.sxhalo.manage.map.TaskContacts", id);
			return instance;
		} catch (RuntimeException re) {
			log.error("get failed", re);
			throw re;
		}
	}

	public List findByExample(TaskContacts instance) {
		log.debug("finding TaskContacts instance by example");
		try {
			List results = getCurrentSession()
					.createCriteria("com.sxhalo.manage.map.TaskContacts")
					.add(Example.create(instance)).list();
			log.debug("find by example successful, result size: "
					+ results.size());
			return results;
		} catch (RuntimeException re) {
			log.error("find by example failed", re);
			throw re;
		}
	}

	public List findByProperty(String propertyName, Object value) {
		log.debug("finding TaskContacts instance with property: "
				+ propertyName + ", value: " + value);
		try {
			String queryString = "from TaskContacts as model where model."
					+ propertyName + "= ?";
			Query queryObject = getCurrentSession().createQuery(queryString);
			queryObject.setParameter(0, value);
			return queryObject.list();
		} catch (RuntimeException re) {
			log.error("find by property name failed", re);
			throw re;
		}
	}

	public List findAll() {
		log.debug("finding all TaskContacts instances");
		try {
			String queryString = "from TaskContacts";
			Query queryObject = getCurrentSession().createQuery(queryString);
			return queryObject.list();
		} catch (RuntimeException re) {
			log.error("find all failed", re);
			throw re;
		}
	}

	public TaskContacts merge(TaskContacts detachedInstance) {
		log.debug("merging TaskContacts instance");
		try {
			TaskContacts result = (TaskContacts) getCurrentSession().merge(
					detachedInstance);
			log.debug("merge successful");
			return result;
		} catch (RuntimeException re) {
			log.error("merge failed", re);
			throw re;
		}
	}

	public void attachDirty(TaskContacts instance) {
		log.debug("attaching dirty TaskContacts instance");
		try {
			getCurrentSession().saveOrUpdate(instance);
			log.debug("attach successful");
		} catch (RuntimeException re) {
			log.error("attach failed", re);
			throw re;
		}
	}

	public void attachClean(TaskContacts instance) {
		log.debug("attaching clean TaskContacts instance");
		try {
			getCurrentSession().buildLockRequest(LockOptions.NONE).lock(
					instance);
			log.debug("attach successful");
		} catch (RuntimeException re) {
			log.error("attach failed", re);
			throw re;
		}
	}

	public static TaskContactsDAO getFromApplicationContext(
			ApplicationContext ctx) {
		return (TaskContactsDAO) ctx.getBean("TaskContactsDAO");
	}
	public Pager findPagerList(int pageNumber, int pageSize, String whereStr) {
		log.debug("finding Pager TaskContacts instances");
		try {
			String queryString = "from TaskContacts";
			if (whereStr != null && whereStr.length() > 0) {
				queryString = queryString + " where " + whereStr;
			}
			Query queryObject = getCurrentSession().createQuery(queryString);
			// 总记录数
			int total = queryObject.list().size();
			Pager pageData = new Pager(total, pageNumber, pageSize);
			// 设置分页
			queryObject.setFirstResult((pageNumber - 1) * pageSize);
			queryObject.setMaxResults(pageSize);
			// 分页数据
			pageData.setList(queryObject.list());
			return pageData;
		} catch (RuntimeException re) {
			log.error("find Pager TaskContacts failed", re);
			throw re;
		}
	}
}